MBR2045CT-LJ Equivalent & Substitute Parts

Part Overview

The MBR2045CT-LJ is a Schottky diode array manufactured by Diodes Incorporated, configured as a 1 Pair Common Cathode with 60 V reverse voltage rating and 10 A average rectified current per diode. The device is housed in a TO-220-3 through-hole package and meets automotive-grade specifications with AEC-Q101 qualification.

The MBR2045CT-LJ is classified as obsolete. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Alternative devices with equivalent or enhanced electrical characteristics are available from multiple manufacturers in active production status.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io) (per Diode)	10	A
Voltage - Forward (Vf) (Max) @ If	640 mV @ 10 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	100 µA @ 60 V	—
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBR2045CT-LJ is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 60 V minimum
Mounting Type: Through Hole
Package / Case: TO-220-3

Allowable Variation Parameters:

Current - Average Rectified (Io) (per Diode): Equal to or greater than 10 A
Voltage - Forward (Vf) (Max) @ If: Within acceptable operating range for the application
Operating Temperature - Junction: Equal to or greater than -55°C to 150°C
Current - Reverse Leakage @ Vr: Within acceptable limits for the application

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents (Diodes Incorporated) Parts with identical electrical specifications and manufacturer lineage, including MBR2060CT-LJ.

Category 2: Manufacturer-Recommended Alternatives (IXYS, Littelfuse Inc., SMC Diode Solutions, Taiwan Semiconductor Corporation) Parts with enhanced current ratings (15 A or 30 A), improved forward voltage characteristics, or active production status. These devices maintain the 60 V reverse voltage rating, Schottky technology, 1 Pair Common Cathode configuration, and TO-220-3 package while offering superior performance metrics.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA/mA]	Tj (°C)	Product Status	Package
MBR2045CT-LJ	Diodes Incorporated	60	10	640 @ 10 A	100 µA @ 60 V	-55 to 150	Obsolete	TO-220-3
MBR2060CT-LJ	Diodes Incorporated	60	10	640 @ 10 A	100 µA @ 45 V	-55 to 150	Obsolete	TO-220-3
DSA30C60PB	IXYS	60	15	850 @ 15 A	500 µA @ 60 V	-55 to 175	Active	TO-220-3
DSA60C60PB	IXYS	60	30	850 @ 30 A	500 µA @ 60 V	-55 to 175	Active	TO-220-3
DSB30C60PB	IXYS	60	15	780 @ 15 A	10 mA @ 60 V	-55 to 150	Active	TO-220-3
DSB60C60PB	IXYS	60	30	780 @ 30 A	20 mA @ 60 V	-55 to 150	Active	TO-220-3
DSSK28-006B	IXYS	60	15	560 @ 15 A	10 mA @ 60 V	-55 to 150	Active	TO-220-3
DST2060C	Littelfuse Inc.	60	10	645 @ 10 A	850 µA @ 60 V	-55 to 150	Active	TO-220-3
DST3060LC	Littelfuse Inc.	60	15	550 @ 15 A	300 µA @ 60 V	-55 to 125	Active	TO-220-3
MBR1060CTL	SMC Diode Solutions	60	—	600 @ 5 A	1 mA @ 60 V	-55 to 150	Active	TO-220-3
MBR2060CT	Taiwan Semiconductor Corporation	60	20	950 @ 20 A	100 µA @ 60 V	-55 to 150	Active	TO-220-3

Engineering Selection Recommendations

Direct Replacement (Obsolete to Active Status):

The DST2060C (Littelfuse Inc.) provides the closest electrical match to the MBR2045CT-LJ with identical 10 A current rating and 60 V reverse voltage specification. This part is in active production status and maintains the same forward voltage characteristic (645 mV @ 10 A versus 640 mV @ 10 A). The DST2060C is ROHS3 compliant and suitable for automotive applications.

Enhanced Current Capacity Alternatives:

For applications requiring higher current capacity or improved thermal performance, the following active-status parts are available:

DST3060LC (Littelfuse Inc.): 15 A rating with superior forward voltage (550 mV @ 15 A) and active production status. Operating temperature range is -55°C to 125°C.
DSSK28-006B (IXYS): 15 A rating with the lowest forward voltage characteristic (560 mV @ 15 A) among 15 A alternatives and active production status. Operating temperature range is -55°C to 150°C.
DSB30C60PB (IXYS): 15 A rating with moderate forward voltage (780 mV @ 15 A) and active production status. Operating temperature range is -55°C to 150°C.
DSA60C60PB (IXYS): 30 A rating for applications requiring maximum current capacity. Operating temperature range is -55°C to 175°C, providing extended thermal margin.
DSB60C60PB (IXYS): 30 A rating with forward voltage of 780 mV @ 30 A and active production status. Operating temperature range is -55°C to 150°C.

Compliance Considerations:

All recommended substitute parts maintain ROHS3 compliance and are housed in the TO-220-3 through-hole package. The MBR2060CT (Taiwan Semiconductor Corporation) offers 20 A capacity with active production status and ROHS3 compliance, though forward voltage is elevated at 950 mV @ 20 A.

Frequently Asked Questions (FAQ)

Q: Can the MBR2045CT-LJ be directly replaced with any of the listed substitute parts?

A: The DST2060C provides the most direct replacement with identical 10 A current rating and 60 V reverse voltage. All listed substitutes maintain the 60 V reverse voltage rating, Schottky technology, 1 Pair Common Cathode configuration, and TO-220-3 package. Higher-rated devices (15 A and 30 A) are backward-compatible for applications designed for 10 A operation.

Q: What is the significance of forward voltage (Vf) differences among substitute parts?

A: Forward voltage determines power dissipation in the diode. Lower Vf values (such as DSSK28-006B at 560 mV @ 15 A) result in reduced heat generation and improved efficiency. Higher Vf values (such as MBR2060CT at 950 mV @ 20 A) increase power loss. Selection depends on thermal design constraints and efficiency requirements of the application.

Q: Are all substitute parts suitable for automotive applications?

A: The MBR2045CT-LJ carries automotive-grade classification with AEC-Q101 qualification. Among substitutes, DST2060C, DST3060LC, and DSSK28-006B are confirmed active-status parts suitable for automotive use. IXYS parts (DSA30C60PB, DSA60C60PB, DSB30C60PB, DSB60C60PB) and Taiwan Semiconductor Corporation's MBR2060CT are also available for automotive applications. Verify specific qualification requirements with application documentation.

Q: What is the difference between the IXYS DSA and DSB series?

A: Both series maintain identical 60 V reverse voltage and 1 Pair Common Cathode configuration in TO-220-3 packages. The DSA series exhibits higher reverse leakage (500 µA @ 60 V) and higher forward voltage (850 mV @ 15 A or 30 A) with extended operating temperature to 175°C. The DSB series exhibits lower reverse leakage (10 mA or 20 mA @ 60 V) and lower forward voltage (780 mV @ 15 A or 30 A) with operating temperature to 150°C. Selection depends on leakage current and thermal performance requirements.

Q: Why is the MBR1060CTL listed without a specified current rating?

A: The MBR1060CTL datasheet provided does not include an average rectified current specification. This part is available in active production status with 60 V reverse voltage rating and Schottky technology. Forward voltage is specified at 600 mV @ 5 A. Consult the manufacturer's complete datasheet for full electrical specifications before selection.

Q: Can higher-rated devices (15 A or 30 A) be used in place of the 10 A MBR2045CT-LJ?

A: Yes. Higher current-rated devices are backward-compatible for applications designed for 10 A operation. The device will operate within its rated specifications at lower current levels. Thermal management and PCB layout remain unchanged. This approach provides design margin and potential cost optimization through standardization on higher-capacity parts across multiple product lines.

Q: What is the impact of operating temperature range differences?

A: The MBR2045CT-LJ operates from -55°C to 150°C. Substitute parts with identical or extended ranges (such as DSA30C60PB and DSA60C60PB at -55°C to 175°C) provide additional thermal margin. Parts with reduced upper temperature limits (such as DST3060LC at -55°C to 125°C) may require thermal design review for high-temperature applications. Verify application temperature requirements against selected part specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the MBR2045CT-LJ. This ensures compatibility with environmental and regulatory requirements for electronic component procurement.

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